They have made some minor changes since the 2013 redesign. 2015 saw the addition of power folding mirrors and an embedded modem, so that you can use features of the MyLincoln Mobile smartphone app. Besides the "new black" color, 2016 didn't really add much new. But I do LOVE the puddle lamps on the 2016 MKZ. (Have you seen them?)
I'm thinking I'm going to take the plunge and get a Black Label Hybrid next year (2017 model). I also have several hopes/fears about waiting...
I've read/seen lots of videos where people complain about all the sliders and touch sensitive buttons. I actually love that design. Especially the way the buttons are virtually invisible until the car is powered on. It's something I haven't seen in any other car. And I'm afraid Lincoln might take it away. I'm sorts holding out for Sync 3, since I can take advantage of Android Auto, but that really isn't a make or break for me. I'm hoping that one day the MKZ will get full-range adaptive cruise control--like some of the German luxury cars--complete with autonomous braking. I've read something about Ford's Pedestrian Detection, etc. that's being introduced on the European version of the Fusion now. It's supposed to come to all Fords and Lincolns eventually, but I don't know how soon. It would also be cool to see the advanced park assist features of the new MKX be brought to the MKZ...e.g. "Park Out Assist" and "Perpendicular Parking Assist." Not absolutely necessary, but I think they're cool features to have. And my last little pet peeve... with such a technologically advanced car, there has to be some way to design an MKZ with a panoramic roof without that horrible rubber mast antenna on the side. I understand that the little knob on the back of the trunk is for the GPS antenna only. There should be some way that Lincoln can incorporate the radio and embedded modem signals another way. That antenna is so ugly and dated. I read somewhere that if you don't get the panoramic roof, the antenna/signal is embedded into the body of the roof. But with the panoramic roof being glass, that wasn't an option--thus the ugly antenna.
So the waiting game is a gamble. I just don't want to wait so long that they change this body style. The next MKZ body style could be hideous. Then again, we may like the next body style even better. Then I could always do a trade in. And lose 30+% of value. :(